Grand Theft Auto V launches next month. The latest installment of the low-life shoot-em-up could be Take Two Interactive's biggest hit yet. Why the videogame maker's shares could race 30% higher.

Take-Two Interactive shares have climbed to $19 from $10 in a year in anticipation of the Sept. 17 release of Grand Theft Auto V, which could be the company's best-selling videogame ever. History says shareholders should take the cash and run before hot anticipation of a profit boost turns to the realization that next year's results won't measure up. But this time around, there's reason to believe Take-Two (ticker: TTWO) will break out of a dozen-year cycle of jumps and spills. Shares could gain another 30% over the next year....